Hi Levi,
Thank you for reaching out to the Microsoft Community. We're sorry to hear about the trouble you're experiencing with your Surface Pro 4. Losing power during a factory reset can definitely cause unexpected issues, and we’re here to help you get things back on track.
What “Lost power doing a default” Means
This message usually appears when your Surface Pro loses power during a factory reset or system recovery process. As a result, the reset may not complete properly, which can lead to:
- Boot issues
- Missing system components
- Problems with signing in (like the keyboard not appearing)
Steps to Recover Your Surface Pro 4
1. Check UEFI (BIOS) Settings
- Power off your Surface.
- Press and hold the Volume Up button, then press and release the Power button.
- Release Volume Up when the UEFI screen appears.
- Check and correct the date and time, as incorrect settings can affect recovery.
2. Create a USB Recovery Drive
- On another PC, go to the Surface Recovery Image page.
- Download the recovery image for your Surface Pro 4.
- Format a USB drive (16GB or larger) as FAT32, and extract the recovery files to it.
3. Boot from USB and Reset
- Insert the USB into your Surface.
- Press and hold Volume Down, then press and release Power.
- Release Volume Down when the Surface logo appears.
- Follow the on-screen instructions to reset your device.
Additional Tips
- If the on-screen keyboard doesn’t appear, it’s likely due to incomplete driver installation.
- If you're unable to sign in because the on-screen keyboard won’t appear, try connecting an external keyboard via USB or Bluetooth. This often works even when system drivers haven’t fully loaded, and it can help you complete the login or recovery process.
- A full recovery using the official image should restore all system components.
- Make sure your Surface is plugged in during the entire recovery process to avoid further interruptions.
Please let us know how it goes or if you need help with any of the steps above. We’re here to support you through the recovery process.
Best regards,
Carl
The Microsoft Community Team